import axios from 'axios';
import {
  ElNotification,
  ElMessageBox,
  ElMessage,
  ElLoading
} from 'element-plus';
import {
  getToken,
  getRefeshToken,
  setRefeshToken,
  setToken
} from '@/utils/auth';
import NProgress from 'nprogress';

import errorCode from '@/utils/errorCode';
import { tansParams, blobValidate } from '@/utils/ruoyi';
import cache from '@/plugins/cache';
import { saveAs } from 'file-saver';
import useUserStore from '@/store/modules/user';
import { ExchangeVisa } from '@/api/login';
//手机
import { showToast, showLoadingToast } from 'vant';
let requestCount = 0;
export let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };
//是不是手机端
export let isMobile = /Android|webOS|iPhone|iPod|BlackBerry/i.test(
  navigator.userAgent
);
let promiseArry = [];
const baseUrl = serverConfig.baseUrl;

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8';
// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  // baseURL: import.meta.env.VITE_APP_BASE_API,
  // baseURL: 'https://www.in-fu.com:9005',
  baseURL: baseUrl,
  // 超时
  timeout: 10000,
  //是否显示loading
  loading: true
});
// request拦截器
service.interceptors.request.use(
  config => {
    //是否显示加载
    if (config.loading) {
      requestCount++;
      if (isMobile) {
        if (requestCount <= 1) {
          downloadLoadingInstance = showLoadingToast({
            message: '加载中...',
            forbidClick: true
          });
        }
      } else {
        if (requestCount <= 1) {
          downloadLoadingInstance = ElLoading.service({
            lock: true,
            text: 'Loading',
            background: 'rgba(0, 0, 0, 0.1)'
            // target: "#MyLoadingId",
          });
        }
      }
    }
    //是否取消请求
    config.cancelToken = new axios.CancelToken(cancel => {
      useUserStore().addCancelToken(cancel);
    });

    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false;
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
    //是否可以重复请求
    const isUpload = config.upload ? config.upload : false;
    if (getToken() && !isToken) {
      config.headers['Authorization'] = getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
      config.headers['RefreshToken'] = getRefeshToken();
    }
    // get请求映射params参数
    if (config.method === 'get' && config.params) {
      let url = config.url + '?' + tansParams(config.params);
      url = url.slice(0, -1);
      config.params = {};
      config.url = url;
    }
    if (
      !isRepeatSubmit &&
      (config.method === 'post' || config.method === 'put') &&
      !isUpload
    ) {
      const requestObj = {
        url: config.url,
        data:
          typeof config.data === 'object'
            ? JSON.stringify(config.data)
            : config.data,
        time: new Date().getTime()
      };
      const sessionObj = cache.session.getJSON('sessionObj');
      if (
        sessionObj === undefined ||
        sessionObj === null ||
        sessionObj === ''
      ) {
        cache.session.setJSON('sessionObj', requestObj);
      } else {
        const s_url = sessionObj.url; // 请求地址
        const s_data = sessionObj.data; // 请求数据
        const s_time = sessionObj.time; // 请求时间
        const interval = 300; // 间隔时间(ms)，小于此时间视为重复提交
        if (
          s_data === requestObj.data &&
          requestObj.time - s_time < interval &&
          s_url === requestObj.url
        ) {
          const message = '数据正在处理，请勿重复提交';
          return Promise.reject(new Error(message));
        } else {
          cache.session.setJSON('sessionObj', requestObj);
        }
      }
    }
    return config;
  },
  error => {
    Promise.reject(error);
  }
);

// 响应拦截器
service.interceptors.response.use(
  res => {
    if (res.config.loading) {
      requestCount--;
      if (requestCount <= 0) {
        downloadLoadingInstance.close();
      }
    }
    // 未设置状态码则默认成功状态 
    const code = res.data?.status || 0;
  
    // 获取错误信息
    let msg = errorCode[code] || res.data.msg || errorCode['default'];
    // 二进制数据则直接返回
    if (
      res.request.responseType === 'blob' ||
      res.request.responseType === 'arraybuffer'
    ) {
      return res.data;
    }
    if (code === 401) {
      if (!isRelogin.show) {
        isRelogin.show = true;
        ExchangeVisa()
          .then(res2 => {
            if (res2.status !== 0) {
              useUserStore()
                .logOut()
                .then(() => {
                  location.href = '/index';
                });
            } else {
              setToken(res2.data.Token);
              setRefeshToken(res2.data.RefreshToken);
              promiseArry?.map(cb =>
                cb(res2.data.Token, res2.data.RefreshToken)
              );
              promiseArry = [];
            }
          })
          .catch(err => {
            useUserStore()
              .logOut()
              .then(() => {
                location.href = '/index';
              });
          })
          .finally(() => {
            isRelogin.show = false;
          });

        //如果正在刷新token，将发起的请求暂存在promiseArry中
        return new Promise(resolve => {
          promiseArry.push((Token, RefreshToken) => {
            // 表示用新的token去替换掉原来的token
            res.config.headers.Authorization = `${Token}`;
            res.config.headers.RefreshToken = `${RefreshToken}`;
            // 替换掉url -- 因为baseURL会扩展请求url
            res.config.url = res.config.url.replace(res.config.baseURL, '');
            resolve(service(res.config));
          });
        });
      }
    } else if (code === 500) {
      let str = res.data.message.substring(0, 1);

      if (str == '[') {
        msg = res.data.message;
      }
      return Promise.reject(new Error(msg));
    } else if (code === 601) {
      ElMessage({
        message: msg,
        type: 'warning'
      });
      return Promise.reject(new Error(msg));
    } else if (code !== 0) {
      if (isMobile) {
        showToast({
          type: 'fail',
          message: msg,
          duration: 3000,
          icon: null
        });
      } else {
        ElNotification.error({
          title: msg
        });
      }
      return Promise.reject('error');
    } else {
      return Promise.resolve(res.data);
    }
  },
  error => {
    requestCount = 0;
    downloadLoadingInstance && downloadLoadingInstance.close();
    let { message } = error;
    if (message == 'Network Error') {
      message = '后端接口连接异常';
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时';
    } else if (message.includes('Request failed with status code')) {
      message = '系统接口' + message.substr(message.length - 3) + '异常';
    }
    if (isMobile) {
      showToast({
        type: 'fail',
        message: message,
        duration: 3000
      });
    } else {
      ElMessage({
        message: message,
        type: 'error',
        duration: 5 * 1000
      });
    }

    return Promise.reject(error);
  }
);

// 通用下载方法
export function download(url, params, filename, config) {
  downloadLoadingInstance = ElLoading.service({
    text: '正在下载数据，请稍候',
    background: 'rgba(0, 0, 0, 0.7)'
  });
  return service
    .post(url, params, {
      transformRequest: [
        params => {
          return tansParams(params);
        }
      ],
      headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
      responseType: 'blob',
      ...config
    })
    .then(async data => {
      const isLogin = await blobValidate(data);
      if (isLogin) {
        const blob = new Blob([data]);
        saveAs(blob, filename);
      } else {
        const resText = await data.text();
        const rspObj = JSON.parse(resText);
        const errMsg =
          errorCode[rspObj.code] || rspObj.msg || errorCode['default'];
        ElMessage.error(errMsg);
      }
      downloadLoadingInstance.close();
    })
    .catch(r => {
      console.error(r);
      ElMessage.error('下载文件出现错误，请联系管理员！');
      downloadLoadingInstance.close();
    });
}

export default service;
